diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 306165e61438..a567dae3b908 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -1804,6 +1804,8 @@ static int lbmLogInit(struct jfs_log * log) * avoid deadlock here. */ init_waitqueue_head(&log->free_wait); + init_waitqueue_head(&log->io_waitq); + atomic_set(&log->io_inflight, 0); log->lbuf_free = NULL; @@ -1855,6 +1857,8 @@ static void lbmLogShutdown(struct jfs_log * log) jfs_info("lbmLogShutdown: log:0x%p", log); + wait_event(log->io_waitq, !atomic_read(&log->io_inflight)); + lbuf = log->lbuf_free; while (lbuf) { struct lbuf *next = lbuf->l_freelist; @@ -1976,6 +1980,7 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio->bi_end_io = lbmIODone; bio->bi_private = bp; + atomic_inc(&log->io_inflight); /*check if journaling to disk has been disabled*/ if (log->no_integrity) { bio->bi_iter.bi_size = 0; @@ -2122,6 +2127,7 @@ static void lbmStartIO(struct lbuf * bp) bio->bi_end_io = lbmIODone; bio->bi_private = bp; + atomic_inc(&log->io_inflight); /* check if journaling to disk has been disabled */ if (log->no_integrity) { @@ -2168,7 +2174,7 @@ static void lbmIODone(struct bio *bio) { struct lbuf *bp = bio->bi_private; struct lbuf *nextbp, *tail; - struct jfs_log *log; + struct jfs_log *log = bp->l_log; unsigned long flags; /* @@ -2214,7 +2220,6 @@ static void lbmIODone(struct bio *bio) INCREMENT(lmStat.pagedone); /* update committed lsn */ - log = bp->l_log; log->clsn = (bp->l_pn << L2LOGPSIZE) + bp->l_ceor; if (bp->l_flag & lbmDIRECT) { @@ -2299,6 +2304,8 @@ static void lbmIODone(struct bio *bio) out: bp->l_flag |= lbmDONE; LCACHE_UNLOCK(flags); + if (atomic_dec_and_test(&log->io_inflight)) + wake_up(&log->io_waitq); } int jfsIOWait(void *arg) diff --git a/fs/jfs/jfs_logmgr.h b/fs/jfs/jfs_logmgr.h index 09e0ef6aecce..31b826d546c0 100644 --- a/fs/jfs/jfs_logmgr.h +++ b/fs/jfs/jfs_logmgr.h @@ -400,6 +400,8 @@ struct jfs_log { uuid_t uuid; /* 16: 128-bit uuid of log device */ int no_integrity; /* 3: flag to disable journaling to disk */ + atomic_t io_inflight; + wait_queue_head_t io_waitq; }; /*